Letter to the Editor: Waning Vaccine Immunity and the Need for a Third (Booster) Vaccine to Prevent Breakthrough Infections against COVID-19
1978 ◽
Vol 9
(3)
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pp. 197-200
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2020 ◽
Vol 63
(12)
◽
pp. 4325-4326
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1950 ◽
Vol 15
(3)
◽
pp. 266-269
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